When to Prune Dichroa jasminoides
As a unique shrub that blooms both blue and white flowers simultaneously, pruning Dichroa jasminoides directly affects the amount of flowers and the aesthetic of the plant. Mastering the correct pruning method not only maintains good ventilation and light penetration but also promotes secondary blooming. This article will provide a detailed explanation of pruning timing and key operational points through illustrations.
The Best Time for Pruning Dichroa jasminoides
Pruning After Blooming to Encourage New Growth
Immediately after the peak blooming period from April to June, prune the withered flowers and the 1-2 nodes below using sharp pruning shears. Special attention should be given to removing weak and crossing branches, which can compete with the main branches for nutrients and cause the plant to become loose. For the long branches exceeding 40cm, it is recommended to retain 15cm for pruning back.
Winter Pruning to Prevent Disease and Maintain Health
When the temperature drops below 10°C (approximately November-December), systematic pruning of diseased and pest branches is required. Cut the diseased branch at a 2cm angle from the base with a scissor wiped with alcohol, and apply sulfur powder to the cut to prevent infection. Retain 3-5 main branches around the trunk, and thin out dense branches to improve internal ventilation.
Professional Pruning Operation Guide
Tool Disinfection Standard
Prepare two sets of tools for alternate use: pruning shears for branches with a diameter less than 1cm, and saws for thick branches. Wipe the cutting edges with a 75% alcohol cotton pad before each use, and disinfect again when pruning different plants to avoid cross-contamination.
Key Points for Wound Care
Avoid watering within 3 days after pruning, and wait for the cuts to form callus tissue (about 5-7 days) before resuming normal care. Spray a 800x solution of carbendazim in the morning on a sunny day, and use bagging to prevent rain erosion. Apply potassium dihydrogen phosphate before the new buds germinate to promote wound healing.
Advanced Techniques for Shaping Pruning
For an umbrella shape, retain the central vertical main branch and keep side branches at a 30-degree angle; for a spherical shape, perform flat pruning once in spring and autumn; for old stakes over 5 years, the method of cutting back to stimulate the growth of latent buds at the base can be used.
Through scientific pruning management, Dichroa jasminoides can bloom 3-4 times a year, with a more compact and beautiful plant shape. It is recommended to adopt a progressive pruning strategy based on the age and growth state of the plant, combined with adequate phosphorus and potassium fertilizer supplements, to allow Dichroa jasminoides to continuously display its charming appearance.